Rated voltage: DC5V Charging time: about 6 to 8 hours Battery life: 180 days Rated power: 2W Battery type: lithium battery Waterproof grade: IPX7 waterproof Product weight: 88g Packing weight: 350g Product size: 24 * 2.3 * 2.3cm Packing size: 14 * 23 * 4.5cm Packing quantity: 39pcs Packing weight: 14.1kg Packing size: 49.5 * 34 * 42.5CM Charging port: DC 1. 4 intelligent modes, vibration crescendo technology 2. 3D three-dimensional curved brush head, high-density hair planting round treatment round brush head does not hurt teeth, high-density hair planting is cleaned more thoroughly, and DuPont brush silk is soft material 3 or 4 cleaning modes are switched with one click throughout the day to meet the oral needs of different groups of people 48,000 times/vibration, high-intensity vibration frequency, 500mAh large-capacity lithium battery 45-Day long-lasting battery life null null